Cal. Pub. Res. Code § 14593

Notwithstanding subdivisions (b) and (c) of Section 14591.1, the department may assess a civil penalty of up to 15 percent of the amount due for payment, and interest at the rate earned by the Pooled Money Investment Account, on distributors and beverage manufacturers for underpayment or late payment of the redemption payments for containers to the fund. The department may examine the accounts and records of distributors and beverage manufacturers that pay or should pay a redemption payment. No penalty shall be assessed until 30 days after the department has notified the distributor or manufacturer of the penalty assessment, and the amount due for payment and interest has not been paid.